了解遮挡剔除的好处，在复杂的静态场景的情况下，有很多遮挡，用它来减少可见几何体的数量和绘制调用。
Learn benefits of occlusion culling and use it to reduce amount of visible geometry and draw-calls in case of complex static scenes with lots of occlusion.
文章介绍了基于点绘制技术的原理和比较有代表性的点绘制方法，探讨了外形非常复杂的不规则几何体在计算机图形绘制中生成的物体表面空洞的处理方法。
It introduces the principle of the point-based rendering and some representative methods, discusses a way to deal with some holes on the surface which make in drawing the irregular geometric form.
首先，我创建了该建筑没有提供的CAD平面，因此我绘制了楼层平面图、立面图，并按照它们之间的关系进行排列，而且将它建造成几何体块。
First, I created the building. CAD plans were not given and so I mapped the floor plans and elevations on planes, arranged them in correlation to each other and built the geometry on it.
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